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期刊论文 49

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分层自适应神经模糊推理系统控制器;晶闸管控制串联电容器补偿技术;自动发电控制(AGC);多目标粒子群优化算法;电力系统动态稳定性;相互联系的多源电力系统 1

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DEVELOPMENT OF AN AUTOMATIC WEIGHING PLATFORM FOR MONITORING BODYWEIGHT OF BROILER CHICKENS IN COMMERCIAL

《农业科学与工程前沿(英文)》 2023年 第10卷 第3期   页码 363-373 doi: 10.15302/J-FASE-2023510

摘要:

● An automatic weighing system for monitoring bodyweight of broilers was developed.

关键词: automatic weighing     weight monitoring     floor housing     uniformity     precision poultry farming    

Innovation, practical benefits and prospects for the future development of automatic milking systems

Hongzhe JIANG,Wei WANG,Chunyang LI,Wei WANG

《农业科学与工程前沿(英文)》 2017年 第4卷 第1期   页码 37-47 doi: 10.15302/J-FASE-2016117

摘要: Automatic milking systems (AMS) were designed to replace existing, labor-intensive machine milking and are an area of rapid development in modern dairy farming. The popularity of AMS lies in the convenience of management, decreasing workloads and the consistency of milking compared with non-automated machine milking. Nevertheless, this innovation has not been reviewed comprehensively and the practical benefits of AMS are still unclear. This review gives a brief overview of the historical development of milking machines and the workflow process of state-of-the-art AMS. In addition, a series of comparisons between AMS and current milking machines are made with respect to labor savings, quality parameters, udder health, herd behavior and mastitis detection and are summarized on the basis of relevant studies to show the benefits of the technological changes achieved by AMS. Finally, this review addresses several deficiencies in the technology and procedures of current AMS that need to be improved and also assesses recent advances in milking techniques with a particular focus on their potential for application in AMS.

关键词: automatic milking systems (AMS)     innovation     milking machine     practical effect     future prospects    

Phase change effect of low melting point metal for an automatic cooling of USB flash memory

Haoshan GE, Jing LIU

《能源前沿(英文)》 2012年 第6卷 第3期   页码 207-209 doi: 10.1007/s11708-012-0204-z

Image automatic mosaics based on contour phase correlation

ZHANG Jing, HU Zhiping, OU Zongying, LIU Zhitai

《机械工程前沿(英文)》 2007年 第2卷 第2期   页码 228-234 doi: 10.1007/s11465-007-0040-8

摘要: The image planar mosaics is studied, and an image automatic mosaics algorithm on the basis of contour phase correlation is proposed in this paper. To begin with, by taking into account mere translations and rotations between images, a contour phase correlation algorithm is used to realize the preliminary alignments of images, and the initial projective transformation matrices are obtained. Then, an optimization algorithm is used to optimize the initial projective transformation matrices, and complete the precise image mosaics. The contour phase correlation is an improvement on the conventional phase correlation in two aspects: First, the contours of images are extracted, and the phase correlation is applied to the contours of images instead of the whole original images; Second, when there are multiple peak values approximate to the maximum peak value in the ? function array, their corresponding translations can be regarded as candidate translations and calculated separately, and the best translation can be determined by the optimization of conformability of two images in the overlapping area. The running results show that the proposed algorithm can consistently yield high-quality mosaics, even in the cases of poor or differential lighting conditions, existences of minor rotations, and other complicated displacements between images.

关键词: function     conventional     multiple     algorithm     correlation algorithm    

Fully automatic container terminals of Shanghai Yangshan Port phase IV

Jack Xunjie LUO

《工程管理前沿(英文)》 2019年 第6卷 第3期   页码 457-462 doi: 10.1007/s42524-019-0053-0

摘要:

Engineering Owner: Construction Headquarters of Yangshan Deep-water Port Phase IV Project of Shanghai International Shipping Center

关键词: Yangshan Port     automated equipment     intelligent system     container terminals     port engineering    

Machine vision-based automatic fruit quality detection and grading

《农业科学与工程前沿(英文)》 doi: 10.15302/J-FASE-2023532

摘要:

● A machine vision-based prototype system was developed for fruit grading.

关键词: Computer and machine vision     convolution neural network     deep learning     defective fruit detection     fruit grading     microcontroller    

Multiobjective image recognition algorithm in the fully automatic die bonder

JIANG Kai, CHEN Hai-xia, YUAN Sen-miao

《机械工程前沿(英文)》 2006年 第1卷 第3期   页码 313-316 doi: 10.1007/s11465-006-0026-y

摘要: It is a very important task to automatically fix the number of die in the image recognition system of a fully automatic die bonder. A multiobjective image recognition algorithm based on clustering Genetic Algorithm (GA), is proposed in this paper. In the evolutionary process of GA, a clustering method is provided that utilizes information from the template and the fitness landscape of the current population. The whole population is grouped into different niches by the clustering method. Experimental results demonstrated that the number of target images could be determined by the algorithm automatically, and multiple targets could be recognized at a time. As a result, time consumed by one image recognition is shortened, the performance of the image recognition system is improved, and the atomization of the system is fulfilled.

关键词: clustering     different     recognition algorithm     Algorithm     multiobjective    

Self-propelled automatic chassis of Lunokhod-1: History of creation in episodes

Mikhail MALENKOV

《机械工程前沿(英文)》 2016年 第11卷 第1期   页码 60-86 doi: 10.1007/s11465-016-0370-5

摘要:

This report reviews the most important episodes in the history of designing the self-propelled automatic chassis of the first mobile extraterrestrial vehicle in the world, Lunokhod-1. The review considers the issues in designing moon rovers, their essential features, and the particular construction properties of their systems, mechanisms, units, and assemblies. It presents the results of exploiting the chassis of Lunokhod-1 and Lunokhod-2. Analysis of the approaches utilized and engineering solutions reveals their value as well as the consequences of certain defects.

关键词: moon rover     self-propelled chassis     propulsion     wheel     suspension     soil properties     cross-country ability    

A new automatic convolutional neural network based on deep reinforcement learning for fault diagnosis

《机械工程前沿(英文)》 2022年 第17卷 第2期 doi: 10.1007/s11465-022-0673-7

摘要: Convolutional neural network (CNN) has achieved remarkable applications in fault diagnosis. However, the tuning aiming at obtaining the well-trained CNN model is mainly manual search. Tuning requires considerable experiences on the knowledge on CNN training and fault diagnosis, and is always time consuming and labor intensive, making the automatic hyper parameter optimization (HPO) of CNN models essential. To solve this problem, this paper proposes a novel automatic CNN (ACNN) for fault diagnosis, which can automatically tune its three key hyper parameters, namely, learning rate, batch size, and L2-regulation. First, a new deep reinforcement learning (DRL) is developed, and it constructs an agent aiming at controlling these three hyper parameters along with the training of CNN models online. Second, a new structure of DRL is designed by combining deep deterministic policy gradient and long short-term memory, which takes the training loss of CNN models as its input and can output the adjustment on these three hyper parameters. Third, a new training method for ACNN is designed to enhance its stability. Two famous bearing datasets are selected to evaluate the performance of ACNN. It is compared with four commonly used HPO methods, namely, random search, Bayesian optimization, tree Parzen estimator, and sequential model-based algorithm configuration. ACNN is also compared with other published machine learning (ML) and deep learning (DL) methods. The results show that ACNN outperforms these HPO and ML/DL methods, validating its potential in fault diagnosis.

关键词: deep reinforcement learning     hyper parameter optimization     convolutional neural network     fault diagnosis    

Regenerative braking control strategy in mild hybrid electric vehicles equipped with automatic manual

QIN Datong, YE Ming, LIU Zhenjun

《机械工程前沿(英文)》 2007年 第2卷 第3期   页码 364-369 doi: 10.1007/s11465-007-0064-0

摘要: The actual regenerative braking force of an integrated starter/generator (ISG), which is varied with desired braking deceleration and vehicle speed, is calculated based on an analysis of the required deceleration, maximum braking force of ISG, engine braking force and state of charge (SOC) of battery. Braking force distribution strategies are presented according to the actual regenerative braking force of ISG. To recover the vehicle s kinetic energy maximally, braking shift rules for a mild hybrid electric vehicle (HEV) equipped with automatic manual transmission (AMT) are brought forward and effects of transmission ratios are considered. A test-bed is built up and regenerative braking tests are carried out. The results show that power recovered by the braking shift rules is more than that recovered by the normal braking control rules.

关键词: SOC     Braking     battery     regenerative braking     starter/generator    

Proportional directional valve based automatic steering system for tractors Project supported

Jin-yi LIU,Jing-quan TAN,En-rong MAO,Zheng-he SONG,Zhong-xiang ZHU

《信息与电子工程前沿(英文)》 2016年 第17卷 第5期   页码 458-464 doi: 10.1631/FITEE.1500172

摘要: Most automatic steering systems for large tractors are designed with hydraulic systems that run on either constant flow or constant pressure. Such designs are limited in adaptability and applicability. Moreover, their control valves can unload in the neutral position and eventually lead to serious hydraulic leakage over long operation periods. In response to the problems noted above, a multifunctional automatic hydraulic steering circuit is presented. The system design is composed of a 5-way-3- position proportional directional valve, two pilot-controlled check valves, a pressure-compensated directional valve, a pressurecompensated flow regulator valve, a load shuttle valve, and a check valve, among other components. It is adaptable to most open-center systems with constant flow supply and closed-center systems with load feedback. The design maintains the lowest pressure under load feedback and stays at the neutral position during unloading, thus meeting the requirements for steering. The steering controller is based on proportional-integral-derivative (PID) running on a 51-microcontroller-unit master control chip. An experimental platform is developed to establish the basic characteristics of the system subject to stepwise inputs and sinusoidal tracking. Test results show that the system design demonstrates excellent control accuracy, fast response, and negligible leak during long operation periods.

关键词: Automatic steering system     Hydraulic circuit     Proportional directional valve     Proportional-integral-derivative (PID) control    

基于以太网通信的自动化立体仓库管理与监控系统

王志伟,蒋兆远

《中国工程科学》 2004年 第6卷 第6期   页码 74-76

摘要:

介绍了基于以太网通信的自动化立体仓库管理与控制系统的结构、工作原理、主要功能特点以及该系统软件的设计思想。该系统充分利用了以太网高速通信的特点,实现了对立体仓库的实时管理和控制。

关键词: 自动化立体仓库     计算机管理与监控     以太网通信    

核废物库吊车高精度自动定位的技术实现

栾秀春,韩伟实,王俊玲,杨爱光

《中国工程科学》 2010年 第12卷 第3期   页码 45-50

摘要:

阐述了田湾核电站核废物库21UKT吊车自动化改造工程中高精度自动定位的技术实现,包括控制系统的硬件配置和软件配置、控制逻辑、程序结构以及变频调速函数曲线,并给出了现场检测结果。

关键词: 核废物     吊车     自动控制     定位    

Variable identification and automatic tuning of the main module of a servo system of parallel mechanism

YANG Zhiyong, XU Meng, HUANG Tian, NI Yanbing

《机械工程前沿(英文)》 2007年 第2卷 第1期   页码 82-88 doi: 10.1007/s11465-007-0014-x

摘要: The variables of the main module of a servo system for miniature reconfigurable parallel mechanism were identified and automatically tuned. With the reverse solution module of the translation, the module with the exerted translation joint was obtained, which included the location, velocity and acceleration of the parallelogram carriage-branch. The rigid dynamic reverse model was set as the virtual work principle. To identify the variables of the servo system, the triangle-shaped input signal with variable frequency was adopted to overcome the disadvantages of the pseudo-random number sequence, i.e., making the change of the vibration amplitude of the motor dramatically, easily impact the servo motor and make the velocity loop open and so on. Moreover, all the variables including the rotary inertia of the servo system were identified by the additive mass. The overshoot and rise time were the optimum goals, the limited changing load with the attitude was considered, and the range of the controller variables in the servo system was identified. The results of the experiments prove that the method is accurate.

关键词: acceleration     reconfigurable parallel     additive     sequence     parallel mechanism    

环境一号卫星A/B星数据自动几何精校正设计研究

熊文成,申文明,王桥,史园莉,肖如林,付卓

《中国工程科学》 2014年 第16卷 第3期   页码 37-42

摘要:

环境一号卫星A/B星是我国自主研制的小卫星星座,其在轨稳定运行近5年,并稳定获取了大量高质量的观测数据,实现对这些观测数据的几何精校正处理,对发挥环境星宏观、动态的生态环境监测有着重要意义。本文首先分析了环境一号卫星参数特点以及环境一号卫星2级数据(系统几何校正后的数据)的几何特点。基于此,设计了环境一号卫星各载荷总体几何精校正方法流程以及charge-coupleddevice(CCD)相机自动几何精校正方法。实际运行数据表明,该方法可以较好地实现环境一号卫星各载荷数据的自动几何精校正,环境一号卫星CCD相机自动几何精校正图像精度可达到2个像素以内,同星不同载荷图像之间自动匹配方法可以获取小于1个像素的图像匹配精度。

关键词: 环境一号卫星     自动     几何精校正     CCD    

标题 作者 时间 类型 操作

DEVELOPMENT OF AN AUTOMATIC WEIGHING PLATFORM FOR MONITORING BODYWEIGHT OF BROILER CHICKENS IN COMMERCIAL

期刊论文

Innovation, practical benefits and prospects for the future development of automatic milking systems

Hongzhe JIANG,Wei WANG,Chunyang LI,Wei WANG

期刊论文

Phase change effect of low melting point metal for an automatic cooling of USB flash memory

Haoshan GE, Jing LIU

期刊论文

Image automatic mosaics based on contour phase correlation

ZHANG Jing, HU Zhiping, OU Zongying, LIU Zhitai

期刊论文

Fully automatic container terminals of Shanghai Yangshan Port phase IV

Jack Xunjie LUO

期刊论文

Machine vision-based automatic fruit quality detection and grading

期刊论文

Multiobjective image recognition algorithm in the fully automatic die bonder

JIANG Kai, CHEN Hai-xia, YUAN Sen-miao

期刊论文

Self-propelled automatic chassis of Lunokhod-1: History of creation in episodes

Mikhail MALENKOV

期刊论文

A new automatic convolutional neural network based on deep reinforcement learning for fault diagnosis

期刊论文

Regenerative braking control strategy in mild hybrid electric vehicles equipped with automatic manual

QIN Datong, YE Ming, LIU Zhenjun

期刊论文

Proportional directional valve based automatic steering system for tractors Project supported

Jin-yi LIU,Jing-quan TAN,En-rong MAO,Zheng-he SONG,Zhong-xiang ZHU

期刊论文

基于以太网通信的自动化立体仓库管理与监控系统

王志伟,蒋兆远

期刊论文

核废物库吊车高精度自动定位的技术实现

栾秀春,韩伟实,王俊玲,杨爱光

期刊论文

Variable identification and automatic tuning of the main module of a servo system of parallel mechanism

YANG Zhiyong, XU Meng, HUANG Tian, NI Yanbing

期刊论文

环境一号卫星A/B星数据自动几何精校正设计研究

熊文成,申文明,王桥,史园莉,肖如林,付卓

期刊论文